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Degradation of Mn-doped BaTiO3 ceramic under a high d.c. electric field

Rödel, Jürgen and Tomandl, G. (1984):
Degradation of Mn-doped BaTiO3 ceramic under a high d.c. electric field.
In: Journal of Materials Science, pp. 3515-3523, 19, (11), ISSN 0022-2461,
[Online-Edition: http://dx.doi.org/10.1007/BF02396925],
[Article]

Abstract

A manganese-doped BaTiO3 was investigated with regard to the degradation of resistivity under a high d.c. electric field. Degradation was measured as a function of time, composition and temperature, using an electric field of 3 Vμm−1. The activation energy of the process was found to be 1.13 eV. to clarify the mechanismI againstU characteristics andI againstT graphs of new, degraded and relaxed samples were studied. Electron paramagnetic resonance and potential measurements were found to be useful in describing the degradation. Finally, a brief model is put forward to account for the observed phenomena. It is based on an injection of oxygen vacancies from the anode, which is accompanied by a reduction of manganese in the lattice. Based on a thesis submitted by J. Rödel for the diploma degree at the Department of Ceramics, University of Erlangen, West Germany.

Item Type: Article
Erschienen: 1984
Creators: Rödel, Jürgen and Tomandl, G.
Title: Degradation of Mn-doped BaTiO3 ceramic under a high d.c. electric field
Language: English
Abstract:

A manganese-doped BaTiO3 was investigated with regard to the degradation of resistivity under a high d.c. electric field. Degradation was measured as a function of time, composition and temperature, using an electric field of 3 Vμm−1. The activation energy of the process was found to be 1.13 eV. to clarify the mechanismI againstU characteristics andI againstT graphs of new, degraded and relaxed samples were studied. Electron paramagnetic resonance and potential measurements were found to be useful in describing the degradation. Finally, a brief model is put forward to account for the observed phenomena. It is based on an injection of oxygen vacancies from the anode, which is accompanied by a reduction of manganese in the lattice. Based on a thesis submitted by J. Rödel for the diploma degree at the Department of Ceramics, University of Erlangen, West Germany.

Journal or Publication Title: Journal of Materials Science
Volume: 19
Number: 11
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Nonmetallic-Inorganic Materials
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
Date Deposited: 13 Jun 2012 10:41
Official URL: http://dx.doi.org/10.1007/BF02396925
Identification Number: doi:10.1007/BF02396925
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